Catharanthus plant named ‘Suncatha 2316’

ABSTRACT

A new and distinct cultivar of  Catharanthus  plant named ‘Suncatha 2316’, characterized by its upright to outwardly spreading and mounding plant habit; vigorous growth habit; freely basal branching habit; freely flowering habit; long flowering period; double-type flowers that are pale pink in color; and good garden performance.

Botanical designation: Catharanthus roseus.

Cultivar denomination: ‘SUNCATHA 2316’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct Catharanthus plant, botanically known as Catharanthus roseus and hereinafter referred to by the cultivar name ‘Suncatha 2316’.

The new Catharanthus plant is a product of a planned breeding program conducted by the Inventor in Yame, Fukuoka, Japan. The objective of the breeding program is to develop new freely branching and vigorous Catharanthus plants with numerous attractive flowers.

The new Catharanthus plant originated from a cross-pollination conducted by the Inventor in Yame, Fukuoka, Japan in August, 2011 of a proprietary selection of Catharanthus roseus identified as code designation S22-P-27, not patented, as the female, or seed, parent with a proprietary selection of Catharanthus roseus identified as code designation SIR22-16, not patented, as the male, or pollen, parent. The new Catharanthus plant was discovered and selected by the Inventor as a single flowering plant from within the progeny of the stated cross-pollination in a controlled greenhouse environment in Yame, Fukuoka, Japan in February, 2012.

Asexual reproduction of the new Catharanthus plant by vegetative tip cuttings in a controlled greenhouse environment in Yame, Fukuoka, Japan since February, 2012, has shown that the unique features of this new Catharanthus plant are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the new Catharanthus have not been observed under all possible combinations of environmental conditions and cultural practices. The phenotype may vary somewhat with variations in environmental conditions such as temperature and light intensity without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Suncatha 2316’. These characteristics in combination distinguish ‘Suncatha 2316’ as a new and distinct Catharanthus plant:

-   -   1. Upright to outwardly spreading and mounding plant habit.     -   2. Vigorous growth habit.     -   3. Freely basal branching habit.     -   4. Freely flowering habit.     -   5. Long flowering period.     -   6. Double-type flowers that are pale pink in color.     -   7. Good garden performance.

Plants of the new Catharanthus can be compared to plants of the female parent selection. Plants of the new Catharanthus differ primarily from plants of the female parent selection in flower petal color as plants of the female parent selection have darker pink-colored flower petals.

Plants of the new Catharanthus can be compared to plants of the male parent selection. Plants of the new Catharanthus differ primarily from plants of the male parent selection in the following characteristics:

-   -   1. Plants of the new Catharanthus have double-type flowers         whereas plants of the male parent selection have single-type         flowers.     -   2. Plants of the new Catharanthus and the male parent selection         differ in flower color as plants of the male parent selection         have red-colored flowers.

Plants of the new Catharanthus can be compared to plants of the Catharanthus roseus ‘Sunnichi Tahome’, disclosed in U.S. Plant Pat. No. 25,250. In side-by-side comparisons, plants of the new Catharanthus differed from plants of ‘Sunnichi Tahome’ in the following characteristics:

-   -   1. Plants of the new Catharanthus were larger than plants of         ‘Sunnichi Tahome’.     -   2. Plants of the new Catharanthus had smaller leaves than plants         of ‘Sunnichi Tahome’.     -   3. Plants of the new Catharanthus had smaller flowers than         plants of ‘Sunnichi Tahome’.     -   4. Plants of the new Catharanthus had double-type flowers         whereas plants of ‘Sunnichi Tahome’ had single-type flowers.     -   5. Plants of the new Catharanthus and ‘Sunnichi Tahome’ differed         in flower color as plants of ‘Sunnichi Tahome’ had white-colored         flowers with red purple-colored centers.     -   6. Plants of the new Catharanthus had shorter peduncles than         plants of ‘Sunnichi Tahome’.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearance of the new Catharanthus plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Catharanthus plant.

The photograph at the top of the sheet comprises a side perspective view of a typical flowering plant of ‘Suncatha 2316’ grown in a container.

The photograph at the bottom of the sheet comprises a close-up view of a typical flowering plant of ‘Suncatha 2316’.

DETAILED BOTANICAL DESCRIPTION

The aforementioned photographs and following observations, measurements and values describe plants grown during the late summer in 15-cm containers in an outdoor nursery in Higashiomi, Shiga, Japan and under cultural practices typical of commercial production. During the production of the plants, day temperatures averaged 25° C. and night temperatures averaged 15° C. Plants were four months old when the description and photographs were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2007 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Catharanthus roseus ‘Suncatha 2316’. -   Parentage:     -   -   Female, or seed, parent.—Proprietary selection of             Catharanthus roseus identified as code designation S22-P-27,             not patented.         -   Male, or pollen, parent.—Proprietary selection of             Catharanthus roseus identified as code designation SIR22-16,             not patented. -   Propagation:     -   -   Type.—By vegetative cuttings.         -   Time to initiate roots, summer.—About two weeks at             temperatures about 30° C.         -   Time to initiate roots, winter.—About three weeks at             temperatures about 25° C.         -   Time to produce a rooted young plant, summer.—About five             weeks at temperatures about 30° C.         -   Time to produce a rooted young plant, winter.—About six             weeks at temperatures about 25° C.         -   Root description.—Fibrous; white in color.         -   Rooting habit.—Freely branching; medium density. -   Plant description:     -   -   Plant and growth habit.—Upright to outwardly spreading and             mounding plant habit; freely branching habit, about four             basal branches each with about eight secondary branches             developing per plant; vigorous growth habit.         -   Plant height.—About 39.3 cm.         -   Plant diameter.—About 58.6 cm. -   Lateral branch description:     -   -   Length.—About 37 cm.         -   Diameter.—About 2.9 mm.         -   Internode length.—About 1.8 cm.         -   Strength.—Strong.         -   Aspect.—Upright to outwardly.         -   Texture.—Pubescent.         -   Color.—Close to 145A, slightly tinged with close to 70C. -   Leaf description:     -   -   Arrangement.—Opposite, simple.         -   Length.—About 3.7 cm.         -   Width.—About 1.9 cm.         -   Shape.—Elliptic.         -   Apex.—Broadly acute.         -   Base.—Obtuse.         -   Margin.—Entire.         -   Texture, upper and lower surfaces.—Pubescent, rough.         -   Venation pattern.—Pinnate; reticulate.         -   Color.—Developing leaves, upper surface: Close to 137B.             Developing leaves, lower surface: Close to 137D. Fully             expanded leaves, upper surface: Close to 137C; venation,             close to 144B. Fully expanded leaves, lower surface: Close             to 137D; venation, close to 144D.         -   Petioles.—Length: About 8.1 mm. Diameter: About 1.7 mm.             Texture, upper and lower surfaces: Pubescent. Color, upper             and lower surfaces: Close to 144C. -   Flower description:     -   -   Flower arrangement and habit.—Double-type salverform flowers             arising from upper leaf axils; freely flowering habit with             numerous flowers developing per plant; flowers face mostly             upright.         -   Fragrance.—None detected.         -   Flowering habit.—Plants begin flowering about two to three             weeks after planting; long flowering period, in the garden,             plants flower continuously from the early summer to late             autumn in Japan.         -   Flower longevity.—Individual flowers last about two to three             days on the plant; flowers not persistent.         -   Flower buds.—Length: About 4.1 cm. Diameter: About 7.2 mm.             Shape: Cylindrical. Color: Close to 158A and N155C.         -   Flower diameter.—About 3.6 cm.         -   Flower length (depth).—About 4.7 cm.         -   Eye diameter.—About 4.1 mm.         -   Tube length.—About 2.6 cm.         -   Tube diameter, at the base.—About 1.7 mm.         -   Corolla.—Arrangement: Five petals in a single whorl fused at             the base into a tube; five imbricate petaloids fused at the             base. Petal length (from throat): About 2 cm. Petal width:             About 1.15 mm. Petaloid length: About 2.4 cm. Petaloid             width: About 1.5 cm. Petal shape: Broadly obovate. Petaloid             shape: Oblanceolate. Petal apex: Broadly acute. Petaloid             apex: Acute. Petal margin: Entire. Petaloid margin: Entire;             weakly undulate. Petal and petaloid texture, upper and lower             surfaces: Smooth, glabrous. Throat texture: Smooth,             glabrous. Tube texture: Pubescent. Color: Petals and             petaloids, when opening, upper surface: Close to 56B. Petals             and petaloids, when opening, lower surface: Close to 56D.             Petals and petaloids, fully opened, upper surface: Close to             69C; eye zone, close to 59B; color does not fade with             development. Petals and petaloids, fully opened, lower             surface: Close to N155B; color does not change with             development. Throat: Close to 145B. Tube: Close to 144B             tinged with close to 182C.         -   Calyx.—Arrangement: Star-shaped tubular calyx with five             sepals fused towards the base. Sepal length: About 2.6 mm.             Sepal width: About 0.9 mm. Sepal shape: Lanceolate to             narrowly deltoid. Sepal apex: Acute. Sepal margin: Entire.             Sepal texture, upper and lower surfaces: Smooth, glabrous.             Color, immature and mature, upper surface: Close to 144A.             Color, immature and mature, lower surface: Close to 144A.         -   Peduncles.—Length: About 1.8 mm. Diameter: About 1.3 mm.             Angle: Upright to outwardly. Strength: Strong. Texture:             Smooth, glabrous. Color: Close to 144B.         -   Reproductive organs.—Stamens: Quantity per flower: Five.             Stamen length: About 2.1 mm. Anther shape: Narrowly             elliptic. Anther size: About 1.7 mm by 0.9 mm. Anther color:             Close to 145D. Pollen amount: Scarce. Pollen color: Close to             NN155D. Pistils: Quantity per flower: One. Pistil length:             About 2.2 cm. Style color: Close to 145C. Stigma shape:             Transversely ellipsoidal. Stigma color: Close to 144C. Ovary             color: Close to 145A. Seeds and fruits: Seed and fruit             development have not been observed on plants of the new             Catharanthus. -   Garden performance: Plants of the new Catharanthus have been     observed to have good garden performance and to tolerate wind, rain     and temperatures ranging from about 5° C. to about 35° C. to 40° C. -   Pathogen & pest resistance: Plants of the new Catharanthus have not     been observed to be resistant to pathogens and pests common to     Catharanthus plants. 

It is claimed:
 1. A new and distinct Catharanthus plant named ‘Suncatha 2316’ as illustrated and described. 